If intelligence is our only edge, we must learn to use it better, to shape it, to understand its limitations and deficiencies -- to use it as cats use stealth, as katydids use camouflage -- to make it the tool of our survival.
Source: With Ann Druyan.
-- Carl Sagan, (Nov 9 1934-1996), US astronomer; He provided insight in the origin of life by producing amino acids in a mixture of chemicals irradiated by ultraviolet light; wrote Contact.